One difference between a time-series design and an interrupted time-series design is time series examines the effects of a treatment and interrupted time series examines the effect of an outside event.
An analysis of "big series of observations made on the same variable consecutively across time" is what is referred to as a "time series design," which is a subtype of longitudinal research designs. Time series designs have the potential to investigate recurrent observations from the same unit of analysis, such as a person's pattern of offence throughout the course of their lifetime, however these studies are impracticable in criminology .
History, or "the likelihood that influences other than the treatment under research altered the dependent variable at the same moment the intervention was introduced," is a significant threat to internal validity for interrupted time series designs.
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